package com.gong.java_gobang.api;

import com.gong.java_gobang.model.User;
import com.gong.java_gobang.model.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

@RestController
public class UserAPI {

    @Resource
    private UserMapper userMapper;
    @Autowired
    private HttpSession httpSession;

    @PostMapping("/login")
    @ResponseBody
    public Object login(String username, String password, HttpServletRequest req) {
        // 关键操作就是根据 username 去数据库中进行查询，
        // 如果能找到匹配的用户，并且密码也一致，那就认为登录成功
        User user = userMapper.selectByName(username);
        System.out.println("[login] user=" + username);
        if(user == null || !user.getPassword().equals(password)) {
           // 登录失败
            System.out.println("打印失败");
            return new User();
        }
        HttpSession httpSession = req.getSession(true);
        httpSession.setAttribute("user", user);
        return user;
    }

    @PostMapping("/register")
    @ResponseBody
    public Object register(String username, String password) {
        try {
            User user = new User();
            user.setUserName(username);
            user.setPassword(password);
            userMapper.insert(user);
            return user;
        } catch (org.springframework.dao.DuplicateKeyException e) {
            User user = new User();
            return user;
        }
    }

    @GetMapping("/userInfo")
    @ResponseBody
    public Object getUserInfo(HttpServletRequest req) {
        try {
            HttpSession httpSession = req.getSession(false);
            User user = (User) httpSession.getAttribute("user");
            return user;
        } catch (NullPointerException e) {
            return new User();
        }
    }
}
